Battery knowledge · Charging infrastructure
Vehicle-to-everything
The umbrella term for using a vehicle’s battery as a source as well as a load: vehicle-to-load for appliances, vehicle-to-home, vehicle-to-building, vehicle-to-vehicle and vehicle-to-grid. All need bidirectional power electronics and, beyond the simplest, communication such as ISO 15118-20; the abbreviation is also used for vehicle communication networks.
- Abbreviation
- V2X
- Also called
- vehicle-to-building, V2B, bidirectional power transfer
Example
Charging infrastructure: an example situation
A 100 kW model request does not establish real voltage, current, connector or negotiation compatibility.
Read Vehicle-to-everything alongside Grid-to-vehicle in this context. Power flowing from the grid into a vehicle’s battery — ordinary charging, named to contrast it with vehicle-to-grid. Managed grid-to-vehicle charging shifts and modulates this one-way flow to suit the grid, offering flexibility without the extra battery cycling or the bidirectional hardware that two-way systems need.
Use in Lemonergy
Lemonergy Studio blocks
Model signed grid exchange
Explicit battery and converter exchange average power.
Blocks to use
- Scheduled import / export and load policy
Requests signed power
Inputs & settings
- mode
- reserveSoc / targetSoc
- loadPower, outage → command
- Bidirectional grid / load interface
Converts battery and grid/load power
Inputs & settings
- importEfficiency / exportEfficiency
- importLimitW / exportLimitW
- Electrical ports p and n
- Battery with SOC-dependent OCV
Stores charge and supplies terminal voltage
Inputs & settings
- capacityAh
- initialSoc
- emptyVoltageV / fullVoltageV
- resistanceOhm
- Electrical ports p and n
- Electrical reference
Sets zero potential
Inputs & settings
- Connect p to reference net
This overview identifies the components to use. Follow the example in Lemonergy for their connections and settings.
Example. −5 kW requests export; +5 kW requests import. 5 kW exported at 95% efficiency needs about 5.26 kW battery power.
Observe. Reserve and converter limits can reduce export.
This excludes AC waveforms, synchronization, communications and certification.
Open the Studio example →References & further reading
Further reading on this topic
These sources provide broader context; they are not presented as citations for every statement in this entry.
- Electric Vehicle Charging Stations
U.S. Department of Energy, Alternative Fuels Data Center
Topic background · U.S. charging equipment levels, charging infrastructure and connector context. Regional terminology varies.